Former secretary of State George Shultz has joined several other former U.S. officials — Henry Kissinger, William Perry, and Sam Nunn — in directing the Nuclear Security Project, which is aimed at “ending nuclear weapons as a threat to the world.” According to Shultz, times have changed. The doctrine of deterrence that existed during the Cold War no longer applies. The number of nations pursuing nuclear weapons has metastasized, and the non-proliferation regime has unraveled. Hence, we need a new objective: a world free of nuclear weapons.